package com.huawei.struts.dao;

import java.util.Date;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.springframework.context.ApplicationContext;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.st.model.LjwLetterT;

/**
 * A data access object (DAO) providing persistence and search support for
 * LjwLetterT entities. Transaction control of the save(), update() and delete()
 * operations can directly support Spring container-managed transactions or they
 * can be augmented to handle user-managed Spring transactions. Each of these
 * methods provides additional information for how to configure it for the
 * desired type of transaction control.
 * 
 * @see com.st.model.LjwLetterT
 * @author MyEclipse Persistence Tools
 */

public class LjwLetterTDAO extends HibernateDaoSupport {
	private static final Log log = LogFactory.getLog(LjwLetterTDAO.class);
	// property constants
	public static final String LETTER_TITLE = "letterTitle";
	public static final String LETTER_CONTENT = "letterContent";
	public static final String FROM_USER_ID = "fromUserId";
	public static final String TO_USER_ID = "toUserId";
	public static final String IS_VIEW = "isView";
	public static final String CREATION_BY = "creationBy";

	protected void initDao() {
		// do nothing
	}

	public void save(LjwLetterT transientInstance) {
		log.debug("saving LjwLetterT instance");
		try {
			getHibernateTemplate().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(LjwLetterT persistentInstance) {
		log.debug("deleting LjwLetterT instance");
		try {
			getHibernateTemplate().delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public LjwLetterT findById(java.lang.Integer id) {
		log.debug("getting LjwLetterT instance with id: " + id);
		try {
			LjwLetterT instance = (LjwLetterT) getHibernateTemplate().get(
					"com.st.model.LjwLetterT", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(LjwLetterT instance) {
		log.debug("finding LjwLetterT instance by example");
		try {
			List results = getHibernateTemplate().findByExample(instance);
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {
		log.debug("finding LjwLetterT instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from LjwLetterT as model where model."
					+ propertyName + "= ?";
			return getHibernateTemplate().find(queryString, value);
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findByLetterTitle(Object letterTitle) {
		return findByProperty(LETTER_TITLE, letterTitle);
	}

	public List findByLetterContent(Object letterContent) {
		return findByProperty(LETTER_CONTENT, letterContent);
	}

	public List findByFromUserId(Object fromUserId) {
		return findByProperty(FROM_USER_ID, fromUserId);
	}

	public List findByToUserId(Object toUserId) {
		return findByProperty(TO_USER_ID, toUserId);
	}

	public List findByIsView(Object isView) {
		return findByProperty(IS_VIEW, isView);
	}

	public List findByCreationBy(Object creationBy) {
		return findByProperty(CREATION_BY, creationBy);
	}

	public List findAll() {
		log.debug("finding all LjwLetterT instances");
		try {
			String queryString = "from LjwLetterT";
			return getHibernateTemplate().find(queryString);
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public LjwLetterT merge(LjwLetterT detachedInstance) {
		log.debug("merging LjwLetterT instance");
		try {
			LjwLetterT result = (LjwLetterT) getHibernateTemplate().merge(
					detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(LjwLetterT instance) {
		log.debug("attaching dirty LjwLetterT instance");
		try {
			getHibernateTemplate().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(LjwLetterT instance) {
		log.debug("attaching clean LjwLetterT instance");
		try {
			getHibernateTemplate().lock(instance, LockMode.NONE);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public static LjwLetterTDAO getFromApplicationContext(ApplicationContext ctx) {
		return (LjwLetterTDAO) ctx.getBean("LjwLetterTDAO");
	}
}